Errichto Algorithms

LeetCode Day 21 - Interactive Grid (Leftmost Column with 1)

LeetCode Day 19 - Search in Rotated Sorted Array

Linux setup for Competitive Programming (with Geany)

Google Hash Code 2018 recap

I Lost In Google Hash Code 2022

Google Code Jam Round 2 Screencast (full score!)

Binary Lifting (Kth Ancestor of a Tree Node)

Google Code Jam 2021 Qualification Round Solutions & Live Commentary

LCA – Lowest Common Ancestor

Leetcode Biweekly #56 (2nd Place)

C++ For-Loops Range | Algorithms For Beginners

Google Code Jam 2021 Round 1B (6th place)

C++ Caesar Cipher (ASCII Codes) | Algo for Beginners

Algo Talk: Railroads from Facebook Hacker Cup

Kickstart 2021 Round C (1st place)

Google Code Jam 2020 1C Practice

Google Code Jam 2021 R3 Screencast

Prefix Sums - Problems, Code in C++ & Python

Sparse Table & RMQ (Range Minimum Query)

Algo Talk with SecondThread: Parade

Facebook Hacker Cup 2020 Finals

Facebook Hacker Cup 2020 R3 (I Got To Finals!)

A B C Explained | Screencast of Google Code Jam 2020 Qual Round

Dynamic Programming lecture #1 - Fibonacci, iteration vs recursion

DFS With Slashes - Coding Interview Stream Highlights

Dynamic Programming lecture #3 - Line of wines

Bot Tournament | CodinGame Fall Challenge 2020

Matrix Exponentiation Coding (Part 1/2)

LeetCode Day 22 - Subarray Sum Equals K

Facebook Hacker Cup 2020 R2 (7th place)

Google Code Jam 2020 R3 - Screencast & Commentary

Amazon Coding Interview Question - Merge Two Sorted Lists

Google Coding Interview Question - Longest String Chain

How to start Competitive Programming? For beginners!

Codeforces problem - Pairs

Codeforces problem NEKO's Maze Game (div1A)

Facebook Hacker Cup 2020 Qual' (2nd place)

Longest Common Subsequence - Recursive and Iterative DP (LeetCode Day 26)

Bitwise Operations tutorial #1 | XOR, Shift, Subsets

Binary Search tutorial (C++ and Python)

Programming Competitions (Codeforces, Code Jam, ...)

2nd Place in Google Kickstart 2020 G with keyboard-cam and commentary

LeetCode Challenge Day 3 - Max Subarray

C++ Bitsets in Competitive Programming

POI problem Movie-goer | Polish Olympiad in Informatics

Randomized algorithms lecture #1 - probability, repeating a process

Day 6 | Advent of Code 2024

Randomized algorithms lecture #2 - birthday paradox, random shuffle, hashing

LeetCode Day 10 - Min Stack C++ Implementation

Dynamic Programming - AtCoder educational dp contest

Coding Interview Question - Max Min (Hackerrank)